1689280937728 has 36 divisors (see below), whose sum is σ = 3372104681568. Its totient is φ = 844605009920.

The previous prime is 1689280937719. The next prime is 1689280937753. The reversal of 1689280937728 is 8277390829861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6612825 + ... + 6863527.

It is an arithmetic number, because the mean of its divisors is an integer number (93669574488).

Almost surely, 2^{1689280937728} is an apocalyptic number.

It is an amenable number.

1689280937728 is a deficient number, since it is larger than the sum of its proper divisors (1682823743840).

1689280937728 is an equidigital number, since it uses as much as digits as its factorization.

1689280937728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277040 (or 277026 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 70.

The spelling of 1689280937728 in words is "one trillion, six hundred eighty-nine billion, two hundred eighty million, nine hundred thirty-seven thousand, seven hundred twenty-eight".